JPS57175259A - Speed detector - Google Patents

Speed detector

Info

Publication number
JPS57175259A
JPS57175259A JP56060964A JP6096481A JPS57175259A JP S57175259 A JPS57175259 A JP S57175259A JP 56060964 A JP56060964 A JP 56060964A JP 6096481 A JP6096481 A JP 6096481A JP S57175259 A JPS57175259 A JP S57175259A
Authority
JP
Japan
Prior art keywords
speed
low
outputs
circuit
frequency
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP56060964A
Other languages
Japanese (ja)
Other versions
JPH0474671B2 (en
Inventor
Hiroshi Ishida
Yoshimoto Fujioka
Naoto Oota
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fanuc Corp
Original Assignee
Fanuc Corp
Fujitsu Fanuc Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fanuc Corp, Fujitsu Fanuc Ltd filed Critical Fanuc Corp
Priority to JP56060964A priority Critical patent/JPS57175259A/en
Priority to KR8201699A priority patent/KR900002510B1/en
Priority to EP82901160A priority patent/EP0077403B1/en
Priority to DE8282901160T priority patent/DE3272836D1/en
Priority to PCT/JP1982/000136 priority patent/WO1982003692A1/en
Priority to US06/456,001 priority patent/US4560927A/en
Publication of JPS57175259A publication Critical patent/JPS57175259A/en
Publication of JPH0474671B2 publication Critical patent/JPH0474671B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/46—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring amplitude of generated current or voltage
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P13/00—Indicating or recording presence, absence, or direction, of movement
    • G01P13/02—Indicating direction only, e.g. by weather vane
    • G01P13/04—Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement
    • G01P13/045—Indicating positive or negative direction of a linear movement or clockwise or anti-clockwise direction of a rotational movement with speed indication

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Control Of Ac Motors In General (AREA)
  • Control Of Electric Motors In General (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

PURPOSE: To attain the detection of speed with high accuracy regardless of a high or low speed, by selecting the speed signal based on the two pairs of frequency signals corresponding to the speeds of phases different by π/2 in a low- speed mode and the reverse signals of the above-mentioned frequency signals.
CONSTITUTION: Detection outputs PA and PB having the frequency (f) corresponding to the speed given from a pulse generator 101 with the phases different by π/2 are processed through reverse amplifiers 102 and 103, pulse converting circuits 104 and 105 plus a quadrupling circuit 106 respectively to produce an output of frequency (f). Then the voltage corresponding to the speed given from a frequency-voltage converter 107 incorporating an integral network, etc. is produced. On the other hand, the outputs PA and PB plus their reverse outputs are applied to switches S1WS4 of a synchronous rectifying circuit 109 which is controlled by the coutput of the circuit 106 via a differentiating circuit 108 to produce the voltage corresponding to the speed in a low-speed mode. The outputs of these converter 107 and curcuit 109 are selected by a detecting circuit 110 according to a high or low speed. In a low-speed mode, the output of the converter 107 having a reduction of accuracy is not selected. Thus the detection of speed is possible with high accuracy regardless of a high or low speed.
COPYRIGHT: (C)1982,JPO&Japio
JP56060964A 1981-04-22 1981-04-22 Speed detector Granted JPS57175259A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP56060964A JPS57175259A (en) 1981-04-22 1981-04-22 Speed detector
KR8201699A KR900002510B1 (en) 1981-04-22 1982-04-17 Speed detecting device
EP82901160A EP0077403B1 (en) 1981-04-22 1982-04-22 Speed detecting device
DE8282901160T DE3272836D1 (en) 1981-04-22 1982-04-22 Speed detecting device
PCT/JP1982/000136 WO1982003692A1 (en) 1981-04-22 1982-04-22 Speed detecting device
US06/456,001 US4560927A (en) 1981-04-22 1982-04-23 Speed detecting apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56060964A JPS57175259A (en) 1981-04-22 1981-04-22 Speed detector

Publications (2)

Publication Number Publication Date
JPS57175259A true JPS57175259A (en) 1982-10-28
JPH0474671B2 JPH0474671B2 (en) 1992-11-26

Family

ID=13157599

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56060964A Granted JPS57175259A (en) 1981-04-22 1981-04-22 Speed detector

Country Status (6)

Country Link
US (1) US4560927A (en)
EP (1) EP0077403B1 (en)
JP (1) JPS57175259A (en)
KR (1) KR900002510B1 (en)
DE (1) DE3272836D1 (en)
WO (1) WO1982003692A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS603471U (en) * 1983-06-17 1985-01-11 株式会社明電舎 Rotation speed detection device
JPS62191768A (en) * 1986-02-19 1987-08-22 Hitachi Ltd Apparatus for outputting rotation information
US6384594B1 (en) 1999-07-26 2002-05-07 Toyota Jidosha Kabushiki Kaisha Revolution speed detecting apparatus for extracting signal corresponding to revolution speed

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4481468A (en) * 1981-05-14 1984-11-06 Toshiba Kikai Kabushiki Kaisha Velocity detecting apparatus having a two-phase resolver
EP0148518B1 (en) * 1983-12-22 1989-01-25 Mavilor Systèmes S.A. Apparatus for generating an electrical speed signal
DE3412557A1 (en) * 1984-04-04 1985-10-24 Mauser-Werke Oberndorf Gmbh, 7238 Oberndorf LENGTH MEASURING DEVICE
DE3625345A1 (en) * 1986-07-26 1988-01-28 Olympia Ag METHOD AND ARRANGEMENT FOR GENERATING A TACHO VOLTAGE FOR DRIVES IN A DC MOTOR IN WRITING OR SIMILAR OFFICE MACHINES
DE3641538A1 (en) * 1986-12-05 1988-06-09 Heidelberger Druckmasch Ag DEVICE FOR DETECTING THE SPEED OF A BRUSHLESS DC MOTOR
JP2535873B2 (en) * 1987-02-19 1996-09-18 ティアツク株式会社 Disk device
JP2574873B2 (en) * 1988-08-24 1997-01-22 株式会社日立製作所 Position or speed detector
JPH02129552A (en) * 1988-11-10 1990-05-17 Matsushita Electric Ind Co Ltd Velocity detector
KR930007174B1 (en) * 1989-03-31 1993-07-31 가부시기가이샤 도시바 Pick-up transferring device
KR20030042856A (en) * 2001-11-26 2003-06-02 백정복 Method of Measuring Revolution Speed of DC Motor and Device Thereof
GB2436874B (en) * 2006-04-07 2010-04-28 Siemens Plc Determining three phase AC motor speed
CN104019020B (en) * 2014-05-28 2016-08-17 中广核核电运营有限公司 Loop control system measured by a kind of main pump digitizing nuclear power station

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53143378A (en) * 1977-05-20 1978-12-13 Hitachi Ltd Speed counting system
JPS5494083A (en) * 1977-12-31 1979-07-25 Ricoh Co Ltd Speed sygnal detector

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB869578A (en) * 1958-06-26 1961-05-31 Nat Res Dev Velocity indicator
US3501651A (en) * 1967-03-24 1970-03-17 North American Rockwell Electronic rate generator
US3761811A (en) * 1971-03-05 1973-09-25 Sperry Rand Corp Rate-of-turn indicator
US3735257A (en) * 1971-10-12 1973-05-22 Gen Motors Corp Tachometer processing circuit using logic device to generate equal width pulses
US3819268A (en) * 1972-08-10 1974-06-25 Iomec Velocity determination with optoelectronic linear position transducer
US3811091A (en) * 1972-08-24 1974-05-14 Itel Corp Electronic tachometer
US3882402A (en) * 1973-02-26 1975-05-06 Digital Equipment Corp Circuit for transmitting velocity signals derived from position signals
JPS5250143B2 (en) * 1974-02-10 1977-12-22
US3902116A (en) * 1974-04-10 1975-08-26 Ibm Quadrature electronic tachometer
US3934200A (en) * 1975-01-31 1976-01-20 Landis Tool Company Tachometer circuit
US4228396A (en) * 1978-05-26 1980-10-14 Dataproducts Corporation Electronic tachometer and combined brushless motor commutation and tachometer system
US4408128A (en) * 1979-03-08 1983-10-04 Kett Electric Laboratory Electric resistance type wide range moisture meter
JPS592349B2 (en) * 1979-03-31 1984-01-18 アンリツ株式会社 power measurement device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53143378A (en) * 1977-05-20 1978-12-13 Hitachi Ltd Speed counting system
JPS5494083A (en) * 1977-12-31 1979-07-25 Ricoh Co Ltd Speed sygnal detector

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS603471U (en) * 1983-06-17 1985-01-11 株式会社明電舎 Rotation speed detection device
JPS62191768A (en) * 1986-02-19 1987-08-22 Hitachi Ltd Apparatus for outputting rotation information
US6384594B1 (en) 1999-07-26 2002-05-07 Toyota Jidosha Kabushiki Kaisha Revolution speed detecting apparatus for extracting signal corresponding to revolution speed

Also Published As

Publication number Publication date
EP0077403A1 (en) 1983-04-27
DE3272836D1 (en) 1986-10-02
EP0077403A4 (en) 1983-08-17
US4560927A (en) 1985-12-24
JPH0474671B2 (en) 1992-11-26
KR830010386A (en) 1983-12-30
WO1982003692A1 (en) 1982-10-28
KR900002510B1 (en) 1990-04-16
EP0077403B1 (en) 1986-08-27

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